Green tech finds (6/24/10)

Can fish ‘n’ chips help with London’s drought? How much power can you get from a potato? These questions and more answered in this week’s green tech finds.

Keeping your gadgets charged in the great outdoors: Heather Clancy at GreenTech Pastures provides a run-down of her favorite solar-powered chargers.

Cheaper, greener biofuel: That’s the ultimate goal of Professor Scott Banta‘s new project to genetically engineer a bacteria that will turn CO2 and ammonia from wastewater into butanol. (via Cleantechnica)

Fish fry oil as a weapon against drought: There’s lots of leftover oil from frying fish in London, and the city will use some of that waste oil to power a new desalination plant. (via MNN)

The potato battery: Researchers at the Hebrew University in Jerusalem have created “a solid organic electric battery that uses potatoes for energy.” (via Green Prophet)

Dam-free hydropower: Dams are controversial… but Eagle, Alaska is harvesting hydropower without the problems by employing a hydrokinetic river turbine made by Canada’s New Energy Corporation. (via Treehugger)